晋北风沙区引种灌木成活与生长情况分析

在晋北风沙区引种栽植沙枣、沙地柏、连翘、文冠果、丽豆、枸杞6种生态经济型灌木树种,从成活率、保存率,及树高、地径、冠径的生长量等方面分析了不同灌木的适生性,初步筛选出了沙地柏、沙枣、文冠果、连翘和枸杞5种适宜的灌木树种。这5种灌木当年造林成活率均达92%以上,3 a保存率均达85%以上;连翘、枸杞、沙枣的树高年平均生长量达40.0 cm;沙枣地径年均生长量最大,为0.63 cm;连翘的冠径年均生长量最大,为67.0 cm.

Survival Rate and Growth of Shrub Introduced in the Windy Desert Regions of Northern Shanxi

Six tree species of ecology-economy shrub including elaeagnus angustifolia L.and Sabina vulgeris were introduced in the windy desert regions of Northern Shanxi.The adaptability of different shrubs was analyzed in the aspects of survival rate,preserving rate,tree height,ground diameter and crown diameter increment,etc.Five suitable shrubs(Sabina vulgeris,Elaeagnus angustifolia L.,Xanthoceras sorbifolia bunge,Forsythia suspense and Lycium barbarum) were preliminary screened.The survival rate of 5 kinds of shrubs in the planting year reached 92% above;the preserving rate in the third years after planting reached 85% above;the tree height annual average of Elaeagnus angustifolia L.,Forsythia suspense and Lycium barbarum reached 40cm.The ground diameter growth of Elaeagnus angustifolia L.is the fastest,about 0.63 cm.And the crown diameter growth of Forsythia suspense is the largest,average 67.0 cm.